I have come up with supporting art for my sponge CAP.

: Inkjet Printing, er, Tracing
Some CAP 10 have developed the helpful ability to generate jets of ink from their barrel arm, and a secondary ability to use their lense to scan abilities. To execute Trace, CAP 10 takes advantage of both these abilities: first it scans the enemy's ability, analyzes how it works, then proceeds to jet ink and claw it into a form that mimics the user's ability.
Here, in a more humorous application, it is shown Intimidating Gyarados through its ink-slashing technique.

: Filter Feeding/Absorbing Poison
Others, however, dedicate their abilities to better food absorption through filter feeding. Some grow so good at this that they can actually
absorb toxins and use them as
food.
Filter should be obvious if this thing gets it. Haven't you ever heard of Filter Feeding, the primary means through which sponges get food?
Self explanatory.
And lastly, I've noticed that when CAP10 lays eggs, they don't produce new CAP10 directly. Instead, it produces a Pokemon that slightly resembles a sponge larva. It appears to be very good at swimming quickly, though it lacks either of its evolved form's abilities.
We have a picture of one next to its parent right now.
http://www.majhost.com/gallery/ToaNeya/kits/CAP-9/CAP10/SnipongeSupportart/cap10prevo.png
Aaaaaaaaaaw.
(sorry Doug, didn't see the 640*640 rule on supporting art)
-Torterra-Infernape-Feraligatr-